Incandescent bulb attachment



NOV. 17, 1931. w wnw 1,832,171

INCANDESCENT BULB ATTACHMENT Filed Dec. 23. 1930 ln ventor Wham Z..W7Z/2r0w A ilorney Patented Nov. 17, 1931 UNITED STATES WILSON L. WITHROW, or rornnnur, wAsHInGron-f INGANDESGENT 'IBULQB) n'rrnonmrmr 7 I Application filed December 23, 19,304serlai yo. l l I vices in mind, I have evolved and produced a simple and expedient device in the nature of an economical attachment susceptible of application to a conventional light bulb, the

attachment being characterized by approprigo ate attaching means, and an'especially designed segmental shield or blind which cooperates with the upper frontal portion of c the bulb in such a manner as to. intercept the light rays which emanate from this portion of the bulb.

The specific features which serve to characterize and add to the novelty of this practical contribution to the art will become more readily apparent from'the following de 80 scription and drawings.

In the drawings:

Figure 1 is a side elevational view of an ordinary light bulb showing the attachment in position.

Figure 2 is a cross section on the line 22 of Figure 1 and throught the attachment per se.

Figure 3 is a bottom plan view of the structure shown assembled in Figure 1.

Figure 4: is a section on the line 44 of Figure 1. l s r l V Figure 5 is a perspective View of the attachment by itself.

In the drawings, in Figure 1, the bulb is generally denoted by the numeral 6, while the numeral 7 designates the metallic mounting or extension thereof adapted for remoV- able reception in a customary light socket. The attachment is generally designated by the numeral 8. As seen in Figure 5 this at? tachment comprises a metallic portidn in l eluding a central plate+like part 9 constituting a shield. This is of predetermined proportions and shape, being preferablyshaped shown in the drawings.

" Attached to and 'exten ding r'earwardly' from thisjplate-like portion arespacedparallel'jfiexibleattaching arms 'or 'straps 10 and 11, The straps 1O terminates at itsinner end withfa "curvate retaining clip 12; "A similar 'reversely I curved companion, clip 13 isfform'ed on the'corresponding end-of the argfill; These two-clips come together'to embr ce-amp re? Oral-e bum he akmifled retaining collar ort ring l isslipped over tliese fingers or clips to hold them in place and'to also hold the complete attachment in operative position.

' A predominating feature of the invention is founded upon the use of an asbestos pad 15 which is of r a' shape corresponding to the shield 9 and which is held in place by the laterally bent retaining fingers 16. Not only does thiselem'ent l5 serve as a pad to afi'ord a cushioningsurfaee for the shield, but it constitutes a practical heat insulating means and furtherserves as a spacer for holding the longitudinally bowed arms 10 and 11 in spaced relation to the globe or glass bulb 6. The gist of the invention is in the provision of a segmental suitably curved shield which conforms to and is disposed against the upper frontal portion of the bulb 6, together with retaining arms, preferably arranged at diammetrically opposite points and so fashioned at their inner endsto permit them to be releasably mounted on the part 7 to form a retaining frame for the shield. A paramount feature of the improvement however, is the utilization of the asbestos pad 15 which is desirable because of its cushioning and insulation properties.

When in place, the attachment will materially lessen objectionable light rays by inter cepting the rayswhich would ordinarily pass through the upper frontal portion of the bulb.

This device eliminates all glare that blinds oncoming traffic and also prevents the illumination of the particles of the atmosphere which reflects back into the eyes of the driver v e i 1,332,171

forming a light screen which obstructs the view of the road.

This device when properly installed in a headlamp that is correctly positioned, fo-

7 cused and aimed prevents glare and permits a better vision at all times.

It is thought that the description, taken in connection with the drawings, will enable a clear understanding of the invention to be had. Therefore, a more lengthy description is thought unnecessary. a 7

While the preferred embodiment of the invention has been shown and described, "it is to be understood that minor changes coming within the field of invention claimed may be resorted to. if desired.

Iiclaimr- V i, v

A light bulb shield of the class described comprising a plate of substantially semicircular shape and curved to fit a part of the largeend of the bulb, arms formed with the plate at the corners thereof, curved laterally extending arms on the free ends of the first.

mentioned arms curving in opposite directions to encircle the base of the bulb, a ring for encircling the laterally extending arms for holding the lateral arms in position on the bulb, a sheet of heat resisting material of thesaine shape as the plate and placedon the inner face thereof, and tongues on said plate bent over the sheet to hold the same in place.

In testimony whereof I'aflix my signature.

WILSON L. ITHROWl 

